System.ComponentModel.ToolboxItemAttribute.ToolboxItemAttribute C# (CSharp) Method

        public ToolboxItemAttribute(string toolboxItemTypeName) {
            string temp = toolboxItemTypeName.ToUpper(CultureInfo.InvariantCulture);
            Debug.Assert(temp.IndexOf(".DLL") == -1, "Came across: " + toolboxItemTypeName + " . Please remove the .dll extension");
            this.toolboxItemTypeName = toolboxItemTypeName;
        }